3699145 has 4 divisors (see below), whose sum is σ = 4438980. Its totient is φ = 2959312.

The previous prime is 3699139. The next prime is 3699169. The reversal of 3699145 is 5419963.

3699145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1948816 + 1750329 = 1396^2 + 1323^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3699145 is a prime.

It is a d-powerful number, because it can be written as 3¹⁰ + 6⁸ + 9³ + 9⁴ + 1 + 4³ + 5⁹ .

3699145 is a lucky number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 369910 + ... + 369919.

It is an arithmetic number, because the mean of its divisors is an integer number (1109745).

Almost surely, 2^3699145 is an apocalyptic number.

It is an amenable number.

3699145 is a deficient number, since it is larger than the sum of its proper divisors (739835).

3699145 is an equidigital number, since it uses as much as digits as its factorization.

3699145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 739834.

The product of its digits is 29160, while the sum is 37.

The square root of 3699145 is about 1923.3161466592. The cubic root of 3699145 is about 154.6561228403.

It can be divided in two parts, 3699 and 145, that added together give a square (3844 = 62²).

The spelling of 3699145 in words is "three million, six hundred ninety-nine thousand, one hundred forty-five".